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含N纳米TiO_2的制备及其可见光响应的研究

Journal of Zhanjiang Normal College(2011)

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Abstract
以纳米TiO2为原料,氨水为掺杂N源,采用高能球磨法合成了含N纳米TiO2粉末.利用XRD、FT-IR、UV-Vis光谱、纳米粒度仪和光催化降解实验对其进行结构及光催化性能表征.研究结果表明,经过氮掺杂的纳米TiO2主要为锐钛矿晶型,晶粒尺寸位于8~10nm之间.对可见光具有良好的吸收性能,其吸收边红移至550nm左右,禁带宽度减小至2.25eV.当太阳光照射30min时,亚甲基蓝溶液的降解率接近100%,体现出良好的可见光响应特性.
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Key words
Nano-TiO2,visible light-active,N-doped,mechanical chemical method
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